Lock



R. A. NES'MIITH.

LOCK. APPLICATION FILED SEPT- 3, I919.

Patented Apr. 27, 1920.

I II I I L //7 WWW" ,Qa/M A New?! UNITED STATES PATENT OFFICE.

RALPH A. NESMITH, or Los ANGELES, cALIronniA, Assronon or ONE-THIRD TO B. J. BRADNER AND ONE-THIRD TO A. s. non sen, some: or Los ANGELES, CALIFORNIA.

Look.

Specification of Letters Patent.

Patented Apr. 27, 1920.

Application filed September 3, 1919. Serial No. 321,365.

1h (/11 whom it may concern:

Be it known that I, RALPH A. NESMIlI-I, a citizen of he United States, residing at ales, in the county of Los Angeles, '1" California, have invented new and useful lmprovements in Locks, of which the following is a specification.

This invuition relates to pad-locks and it is a pa cular object, of the invention to provide a simple inexpensive lock of this general character which can not be twisted or broken oil.

Pad-locks which have heretofore been proposed, even when made heavy and strong, have been easily twisted or broken off by gripping and twisting the body or cas portion of the lock. Due to this fact, .s a e generally twisted or broken off rather than out or picked. By the present invention a lock is provided that overcomes these diiiiculties by providing a casing which can not be gripped in order to twist it off and so shaped that it is practically impossible to crush or break it.

The invention provides a lock in which any suitable catch or locking mechanism can be used in connection with a shackle, and in which practically any desired form. of shackle can be used. The locking mechanism is arranged or incased in a cylindrical casing and the shackle is in connection with the casing. A cylindrical sleeve or casing is provided over, and is free to rotate relative to, the lock mechanism casing. The sleeve is preferably made fairly strong, and is hardened. The outer casing makes it im possible to grip and twist the mechanism casing in order to break the lock and due to the outer casing being cylindrical and hardened, it is practically impossible to cut or crush it.

The simplicity and sightliness of the lock are important features as the lock provided by the invention is not only particularly simple but is also sightly. The simplicity of the lock makes it simple and inexpensive to manufacture while its sightliness greatly adds to its commercial value.

There are further objects and features of the invention which will be readily un derstood from the following detailed description of a typical preferred form of the invention throughout which reference is had to the accompanying drawings in which Figure 1 is a side elevation of a lock embodying the invention; Fig. 2 is a section taken as indicated by line 22 on Fig. '1;

Fig. 3 is a section taken as indicated by line 3--3 on Fig. 2; and Fig. 4; is a section taken as indicated by line -ifi on Fig. Throughout the drawings numeral 10 designates thefllock mechanism casing which comprises a cylindrical side wall 11 and end walls 12 and 13. The casing 10 may be made in any suitable manner. For instance, it may be made in two sections held together by suitable tie rods 30 as shown in the drawings. The casing may be cast iron, or the like, or it may be formed or stamped from sheet metal and the locking mechanism carried in the casing 10, which is adapted to catch and hold. the shackle 14, may be of any desired arrangement or construction. In the drawings is shown a locking mecha-- nism that may be used. Tumblers 31, which have portions 32 adapted to engage the notches 15in the shackle-1at,-may be provided and springs may be carried on the tie rods 80 and may be arranged so as to tend to keep the tumblers in engagement with the notches. A rotatable disk may be arranged in the end 13 of the casing and an aperture may be provided in the disk so that a suitable key 17 can be extended into the casing. projections 40 which are adapted to extend into apertures ii in the tumblers and cause withdrawal of the tumblers from the notches when the key is rotated to the position shown in the drawings. Suitable guides 50 may be formed in the casing 10 to carry the tumblers It will be noted in the draws ings that the shackle l l'extends longitudi-.

nally into or through the casing 10 and is provided with a plurality of notches 15 thereby making it possible to lock the shackle in various positions relative to the casing. This construction also makes it possible to completely remove the shackle from the casing and also makes it possible to tightly and effectively lock various sized and shaped articles. It will be readily understood that the invention is not limited in any way to the locking mechanism, and that various forms of shackles can be effectively used in connection with the casing 10.

An outer casing or sleeve 20 having. a cylindrical side Wall 21 and inwardly extending flanges 22 and 23 at its ends, is arranged in connection with the casing 10 ,so that the cylindrical wall 21 engages the cylindrical wall 11, of the casing 10 and the in- Wardly extending flanges 22 and 23 engage the ends 12 and 13 of the casing 10, respectively. The flanges 22 and 23 prevent longitudinal movement of the casing 10 in the sleeve 20 and thereby keep the casing 10 within the sleeve 20. The sleeve 20 is arranged in connection with the casing 10 so that it is free to rotate relative to the casing and does not in any way interfere with the shackle 14 or the locking mechanism within the casing 10. The inwardly extending flanges 22 and 23 are preferably formed integral with the wall 21 although it will be readily understood that they could be attached to the wall in various manners. For instance, thew could be rings forced into the wall 21 or they could be rings Welded to the wall 21. When the flanges 22 and 23 are formed integral with the sleeve 20 I prefer to take a straight cylindrical tube or sleeve of the proper size and length, heat it, properly place the casing 10 within it and then press or otherwise form the flanges 22 and 23 while the metal is hot. It will be readily understood that the various parts may be made of'any desired weight or strength and that the parts may be heat treated or hardened if so desired. I prefer to case harden both the shackle lt and the sleeve 20 in order to assure the lock against being sawed or otherwise cut.

It will be readily understood from the above description how the sleeve 20 makes it impossible to get at the casing 10 in order to grip or hold it with a wrench or the like, thereby making it impossible to rotate or twist the casing 10. Gripping and turning of the sleeve 20 will not in any way effect the casing 10 as the sleeve and the casing are free to rotate relative to each other. The inwardly extending flanges 22 and 23 of the sleeve 20 not only keep the casing 10 in place within the sleeve 20 but'also brace and strengthen the cylindrical wall 21 so that the sleeve 20 will withstand a great pressure before it will crush or collapse.

Having described a typical embodiment of the invention I do not wish to limit myself to the particular details hereinabove set forth but wish to reserve to myself any changes or variations that may appear to those skilled in the art or fall within the scope of the following claims.

Having described a preferred form of my invention, I claim:

1. A lock comprising a casing carrying a locking mechanism, a shackle in connection with the casing adapted to cooperate with the locking mechanism, and a sleeve in connection with the casing, the sleeve and the casing being free to rotate relative to each other when the shackle is held by the looking mechanism.

2. A look comprising a cylindrical sleeve having inwardly extending flanges at its ends, a casing carried in the sleeve between the flanges, the casing carrying a lock ng mechanism, and a shackle adapted to cooperate with the casing and be held by the 1 locking mechanism, the sleeve being rotatable on the casing when the shackle is held by the locking mechanism.

3. A lock comprising a casing carrying a locking mechanism, the casing comprising a cylindricalwall and two end walls, a shackle in connection with the casing and adapted to be held by the locking mechanism, and a sleeve comprising a cylindrical wall adapted to fit over the cylindrical portion of the casing and inwardly extending flanges at the ends of the cylindrical portion, the flanges being adapted to engage the ends of the casing, the casing and the sleeve being free to rotate relative to each other in a plane of rotation transverse to the plane of the shackle.

4. A look comprising a casing, a lock mechanism, and a cover sleeve in connection with the casing, the sleeve and the casing being free to rotate relative to each other regardless of the condition of the lock mechanism.

5. A lock comprising a casing, a lock mechanism embodying a shackle adapted to extend longitudinally into the casing and lock in any one of a plurality of positions, and a sleeve in connection with the casing, the sleeve and the casing being free to rotate relative to each other on a longitudinal axis.

6. A lock comprising a casing comprising a cylindrical wall and two end walls, a lock mechanism comprising a shackle adapted to extend longitudinally into the casing and lock in any one of a plurality of positions, and a sleeve in connection with the casing the sleeve comprising a cylindrical wall adapted to incase the cylindrical wall of the casing and inwardly extending flanges at the ends of the cylindrical wall adapted to engage the end walls of the casing, the easing and the sleeve being free to rotate relative to each. other on a longitudinal axis.

7. A look comprising a cylindrical casing and a cylindrical cover sleeve for the casing rotatable thereon; lock mechanism in the casing, and a shackle entering the casing and lying in a plane longitudinal of the axis of rotation of the sleeve on the casing. 8. A look comprising a cylindrical casing and a cylindrical cover sleeve for the casing rotatable thereon; lock mechanism in the casing, and a shackle projecting from a longitudinal end of the casing.

In witness that I claim the foregoing I have hereunto subscribed my name this 28th day of August,1919.

RALPH A. NESMITH.

itness VIRGINIA I. BERINGER. 

